This screen is used for auto generating temperature loads from superstructure. These loads are based on the approach listed in the Theory chapter. Click Generate on the Loads: Load Data dialog of type Temperature to display the screen.

For Auto Temperature generation click the Generate button on the Load Data screen. User has to select the type of bearing on the pier. The selected bearing will enable the data required to be filled in by the user.

Fixed bearings required the super structure data and the pier data to calculate the thermal force. Pier data can either be input manually or it can be auto computed. If the user selects the auto compute then Substructure internally calculates the stiffness of all the columns in the pier and use for the thermal force. The user input option allows the user to control the stiffness of the columns in the pier, in this the user can change the properties of the column e.g., may used cracked section for calculating the thermal forces. Super Structure data requires the user to input the contributing length that is involved in the thermal movement, Substructure internally doesn't calculate the contributing length user has to input the appropriate value to control the thermal effects. The user has to consider the zero point movement on the whole and also take into consideration the construction joints to decide about the contributing length. The change in temperature could be the one provided in the code for different regions or it can be the one required by the state. Alpha is the coefficient of thermal expansion and it depends on the material of the super structure, the default value is for concrete but if the super structure is of steel, then user should change it appropriately.

Expansion bearing requires the user to input super structure, pier and Elatomeric bearing data. The pier and super structure data is same as for fixed bearing. Elastomer data has two options for the user manual or compute. If the option for compute then user has to input the area of the bearing, the shear modulus of elastomer and the total thickness of the elastomeric bearing. These values depend upon the properties of the elastomer provided. Substructure only generates the forces on the bearings and will not check any bearings design. The thickness of the elastomeric bearing is without the steel plates. Substructure will calculate the stiffness of the bearing depending upon these properties or user can input it manually.

For sliding bearing the user has to input the friction coefficient. By default it is set to 0.06, normally it ranges from 0.04 to 0.08. It depends upon the type of material used in the bearings. If the user selects the auto calculate option then Substructure takes the total DL applied to the pier or user can input manually.

For Rocker bearing, Substructure requires the radius of the Rocker pin and the rocker. The DL option is either manual or auto, in case of auto Substructure takes the total dead load applied to the pier.